Paper EM-FrM2
Pulsed Laser Deposition of In2O3-SnO2: From Films to Nanowires
Friday, November 11, 2016, 8:40 am, Room 102A
| Session: |
Late Breaking News on Electronic Materials and Devices |
| Presenter: |
Davide Del Gaudio, University of Michigan, Ann Arbor |
| Authors: |
D. Del Gaudio, University of Michigan, Ann Arbor
C. Reese, University of Michigan, Ann Arbor
C. Boone, University of Michigan, Ann Arbor
S. Yarlagadda, University of Michigan, Ann Arbor
J.T. Heron, University of Michigan, Ann Arbor
I. Shalish, Ben-Gurion University of the Negev, Beersheba, Israel
R.S. Goldman, University of Michigan, Ann Arbor
|
| Correspondent: |
Click to Email |
As micrometer sized device structures approach their limits in performance, nano-structures, such as nano-wires (NW) are being considered for next-generation high efficiency energy conversion and storage devices.[1] For example, metal oxides have been identified as promising materials for lithium ion batteries[2] and UV lasers.[3] Furthermore, metal-oxide NWs have been embedded in field-effect transistors, lasers, solar cells, and various chemical sensors.[4] Typically, metal-oxide NW are prepared by vapor deposition[4] or thermal evaporation.[5] Recently, pulsed-laser deposition (PLD)[6][7][8] has emerged as a promising approach for the fabrication of tin-doped indium oxide (ITO), with film or NW growth often determined by the choice of a reactive (O2) or inert (N2) atmosphere.[6] To date, cubic NW with up to 5 atomic % Sn incorporated into In2O3 have been reported. However, a mechanistic understanding of the influence of growth parameters and substrates on the morphology, composition, and crystal structure of the deposited film is needed. Additionally, PLD of various In2O3-SnO2 mixtures has yet to be considered. Therefore, we report on PLD of various In2O3 -SnO2 mixtures, onto c-plane sapphire and Inconel substrates. Using an inert atmosphere, we have identified parameters to obtain smooth films; pyramid-shaped nano-scale clusters; sparse, tapered nano-rods; and high density, vertically oriented NWs, with and without catalyst spheres. We will present high-resolution transmission electron microscopy (HRTEM) images and selective-area electron diffraction (SAED) patterns illustrating the structure and composition of the films, nanowires, and catalyst spheres. The photoluminescence emission from NWs and films, as well as the electronic transport properties of individual NWs will also be discussed.References
[1] Guo, Y.-G., Hu, J.-S., & Wan, L.-J. (2008) Advanced Materials, 20(15), 2878–2887
[2] Poizot, P., Laruelle, S., Grugeon, S., Dupont, L., & Tarascon, J.-M. (2000) Nature, 407(6803), 496–499
[3] Kong, Y. C. and Yu, D. P. and Zhang, B. and Fang, W. and Feng, S. Q. (2001) Applied Physics Letters, 78, 407-409
[4] Shen, G., Chen, P.-C., Ryu, K., & Zhou, C. (2009) Journal of Materials Chemistry, 19(7), 828–839
[5] Yao, B. D. and Chan, Y. F. and Wang, N. (2002) Applied Physics Letters, 81, 757-759
[6] Khan, G. G., Ghosh, S., Sarkar, A., et. al. (2015) Journal of Applied Physics, 118(7), 074303
[7] Kee, Y. Y., Tan, S. S., Yong, T. K., et. al. (2012) Nanotechnology, 23(2), 025706
[8] Savu, R., & Joanni, E. (2006) Scripta Materialia, 55(11), 979–981